Stretchability detection auxiliary device for new butyl rubber material

Abstract

The invention relates to the technical field of material tensile detection auxiliary devices, in particular to a tensile detection auxiliary device for a new butyl rubber material, which comprises a C-shaped frame and a fixing rod, the fixing rod is fixedly connected to the inner side wall of the C-shaped frame, and two shells are slidably connected to the fixing rod. Through cooperation of the correction blocks, the cylinder, the fixing block and other structures, the two correction blocks extrude the rubber test standard sheet, so that the rubber test standard sheet slides in along the end face of the shell, the fixing block and the cylinder are matched, when the rubber test standard sheet is placed, the bottom end of the standard sheet is fixed, and the bottom end of the standard sheet is fixed through the fixing block and the cylinder. The stress direction of the standard sheet and the direction of a tensile machine are completely kept consistent without any deviation through side surface and longitudinal three-point limiting, so that errors caused by sectional area change of the standard sheet due to inclined placement of personnel are avoided, and the accuracy of detection data is ensured.

Description

Technical Field

[0001] This invention relates to the field of auxiliary devices for tensile testing of materials, and in particular to an auxiliary device for tensile testing of butyl rubber, a new material. Background Technology

[0002] Rubber product testing is used to test the performance of rubber materials. It is necessary to test various properties to ensure that the material is suitable for different working environments. When testing its elastic properties, tensile testing is usually performed to measure the maximum length of the stretch. The obtained values ​​are then used to analyze the rubber material.

[0003] The existing tensile testing equipment fixtures are usually placed manually by personnel, which makes it difficult to ensure that the two ends of the rubber are completely parallel. The placement will produce a certain deviation, causing the rubber material to deviate from the direction of force applied by the tensile testing machine at the tensile testing site, thus changing the stress cross section and causing errors. Summary of the Invention

[0004] The purpose of this invention is to address the following shortcomings in the prior art: the clamps of existing tensile testing devices are usually placed manually by personnel, which makes it difficult to ensure that the two ends of the rubber are completely parallel. During placement, a certain deviation will occur, causing the rubber material to deviate from the direction of force application of the tensile testing machine at the tensile testing site, thereby changing the stress cross section and causing errors. Therefore, this invention proposes an auxiliary device for tensile testing of butyl rubber.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An auxiliary device for testing the tensile properties of a new butyl rubber material includes a C-shaped frame and a fixed rod. The fixed rod is fixedly connected to the inner wall of the C-shaped frame, and two housings are slidably connected to the fixed rod. The lower housing is fixedly connected to the C-shaped frame.

[0007] The housing is equipped with an adjustment mechanism, which includes a fixing block, a cylindrical tube, a connecting tube, a micro suction cup, and a rotating plate. The fixing block is fixedly connected to the inner side wall of the housing, the cylindrical tube is fixedly connected to the side wall of the fixing block, the connecting tube is slidably connected to the side wall of the cylindrical tube, the micro suction cup is fixedly connected to one end of the connecting tube, and the rotating plate is fixedly connected to the end of the connecting tube away from the micro suction cup.

[0008] The housing is provided with a calibration mechanism, which includes calibration rods and calibration blocks. The two calibration rods are slidably connected to the side wall of the housing, and the two calibration blocks are fixedly connected to the end of the calibration rod near the fixed block.

[0009] Preferably, a circular ring plate is fixedly connected to the outer surface of the connecting pipe, the circular ring plate is slidably connected to the inner side wall of the cylindrical tube, a square opening is provided on the side wall of the cylindrical tube, a sealing plate is fixedly connected to the side wall of the circular ring plate, and the sealing plate is slidably connected to the square opening.

[0010] Preferably, a screw is fixedly connected to the inner wall of the housing, and clamps are threaded to both ends of the screw. A limit rod is fixedly connected to the inner wall of the housing, and the two clamps are slidably connected to the limit rod.

[0011] Preferably, a rectangular plate is fixedly connected to the end of the rotating plate away from the cylindrical tube, and sliding rods are slidably connected to both ends of the rectangular plate.

[0012] Preferably, the lower end face of the slide bar is connected to multiple triangular blocks, and an L-shaped rod is fixedly connected to the side wall of one of the clamping plates, the L-shaped rod being slidably connected to the triangular blocks.

[0013] Preferably, a calibration plate is fixedly connected to the end of the calibration rod away from the calibration block, an airbag is fixedly connected between the calibration plate and the housing, an air inlet pipe is fixedly connected to the side wall of the airbag, an air outlet pipe is fixedly connected between the airbag and the calibration block, and a one-way valve is provided in both the air inlet pipe and the air outlet pipe.

[0014] Preferably, a crank handle is fixedly connected to the side wall of the screw, a hydraulic cylinder is fixedly connected to the side wall of the housing, the output end of the hydraulic cylinder is fixedly connected to the housing located above, and a guide rod is fixedly connected to the end of the rotating plate away from the cylindrical tube, and the guide rod is slidably connected to the housing.

[0015] Preferably, a correction spring is fixedly connected between the rotating plate and the cylindrical tube, a torsion spring is fixedly connected between the annular plate and the cylindrical tube, a reset spring is fixedly connected between the correction plate and the housing, and an adjustment spring is fixedly connected between the triangular block and the rectangular plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. Through the cooperation of structures such as calibration blocks, cylindrical tubes, and fixing blocks, two calibration blocks compress the rubber test standard piece, causing the rubber test standard piece to slide in along the end face of the shell. With the cooperation of fixing blocks and cylindrical tubes, the bottom, side, and longitudinal ends of the rubber test standard piece are limited when it is placed, so that the force direction of the standard piece is completely consistent with the direction of the tensile testing machine without any deviation. This avoids errors caused by changes in cross-sectional area due to tilting of the standard piece by personnel, and ensures the accuracy of the test data.

[0018] 2. Through the cooperation of structures such as cylindrical tubes and suction cups, the rubber test standard piece is easily slid in after the initial calibration by the calibration block. The suction cup is used to initially fix the standard piece, preventing it from automatically shifting due to gravity or vibration after being released, thus ensuring the accuracy of the test data.

[0019] 3. Through the cooperation of structures such as L-shaped rod, triangular block, and rotating plate, when the rotating screw drives the clamping plate to fix the rubber test standard piece, it drives the L-shaped rod to squeeze the triangular block. When the screw drives the rubber test standard piece to fix it, the L-shaped rod rotates the triangular block, simultaneously releasing the cylindrical tube from fixing the rubber test standard piece. Multiple points can be fixed and released with only one operation, which is very simple and quick to operate and improves the efficiency of multiple tests.

[0020] 4. Through the cooperation of the calibration plate, airbag and other structures, when the rubber test standard piece is removed, the airbag blows off the small amount of rubber debris and dust adhering to the shell, preventing it from remaining inside the shell and causing unevenness inside the shell, which would affect the testing of the next standard piece, thus ensuring the accuracy of continuous testing. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the fixing rod structure of an auxiliary device for tensile testing of a new butyl rubber material proposed in this invention;

[0022] Figure 2 This is a schematic diagram of the shell structure of an auxiliary device for testing the tensile properties of a new butyl rubber material proposed in this invention;

[0023] Figure 3 This is a schematic diagram of the clamping plate structure of an auxiliary device for tensile testing of a new butyl rubber material proposed in this invention;

[0024] Figure 4 This is a schematic diagram of the airbag structure of an auxiliary device for tensile testing of a new butyl rubber material proposed in this invention;

[0025] Figure 5 This is a schematic diagram of a micro-suction cup structure for an auxiliary device for testing the tensile properties of a new butyl rubber material proposed in this invention;

[0026] Figure 6 for Figure 4 A magnified schematic diagram of the structure of part A in the diagram;

[0027] Figure 7 for Figure 5 A magnified schematic diagram of part B.

[0028] In the diagram: 1 C-shaped frame, 2 fixed rod, 3 housing, 4 fixed block, 5 cylindrical tube, 6 connecting pipe, 7 miniature suction cup, 8 rotating plate, 9 correction rod, 10 correction block, 11 circular ring plate, 12 sealing plate, 13 screw, 14 clamping plate, 15 limiting rod, 16 rectangular plate, 17 sliding rod, 18 triangular block, 19 L-shaped rod, 20 correction plate, 21 airbag, 22 air inlet pipe, 23 air outlet pipe, 24 crank handle, 25 hydraulic cylinder, 26 guide rod, 27 correction spring, 28 torsion spring, 29 return spring, 30 adjusting spring. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0030] Reference Figures 1-7 A tensile testing auxiliary device for a new butyl rubber material includes a C-shaped frame 1 and a fixed rod 2. The fixed rod 2 is fixedly connected to the inner wall of the C-shaped frame 1. Two housings 3 are slidably connected to the fixed rod 2. The lower housing 3 is fixedly connected to the C-shaped frame 1. A sliding groove is provided inside the fixed rod 2 so that the guide rod 26 can slide out.

[0031] The housing 3 is equipped with an adjustment mechanism, which includes a fixing block 4, a cylindrical cylinder 5, a connecting tube 6, a micro suction cup 7, and a rotating plate 8. The fixing block 4 is fixedly connected to the inner wall of the housing 3, the cylindrical cylinder 5 is fixedly connected to the side wall of the fixing block 4, and the connecting tube 6 is slidably connected to the side wall of the cylindrical cylinder 5. The connecting tube 6 and the cylindrical cylinder 5 are rotatably connected. The connecting tube 6 and the side of the cylindrical cylinder 5 near the micro suction cup 7 are not sealed, while the connecting tube 6 and the side of the cylindrical cylinder 5 away from the micro suction cup 7 are sealed. The connecting tube 6 is hollow inside, and a vent is provided on its side wall to keep the annular plate 11 in communication with the inside of the cylindrical cylinder 5 and the micro suction cup 7. The micro suction cup 7 is fixedly connected to one of the sections of the connecting tube 6. At one end, the micro suction cup 7 has a very small diameter, which can accommodate the thickness of the standard test piece. The rotating plate 8 is fixedly connected to the end of the connecting tube 6 away from the micro suction cup 7. A correction spring 27 is fixedly connected between the rotating plate 8 and the cylindrical tube 5. A correction mechanism is provided inside the housing 3. The correction mechanism includes a correction rod 9 and a correction block 10. The two correction rods 9 are slidably connected to the side wall of the housing 3. The two correction blocks 10 are fixedly connected to the end of the correction rod 9 near the fixed block 4. The correction block 10 is wedge-shaped near the opening of the housing 3 to facilitate the sliding of the standard test piece. The correction block 10 is hollow inside. Multiple air outlets are opened on the side that is close to each other. The air outlets are set at a 45-degree angle towards the opening of the housing 3.

[0032] A circular ring plate 11 is fixedly connected to the outer surface of the connecting pipe 6. The circular ring plate 11 is slidably connected to the inner wall of the cylindrical tube 5. The circular ring plate 11 is rotatably connected to the side wall of the cylindrical tube 5. A torsion spring 28 is fixedly connected between the circular ring plate 11 and the cylindrical tube 5. A square opening is provided on the side wall of the cylindrical tube 5. A sealing plate 12 is fixedly connected to the side wall of the circular ring plate 11. The sealing plate 12 is slidably connected to the square opening and rotatably connected to the square opening. The sealing plate 12 is relatively long. When slidably connected, it always seals the square opening. When rotating, it is misaligned with the square opening and no longer seals the square opening.

[0033] A screw 13 is fixedly connected to the inner wall of the housing 3. The two ends of the screw 13 are respectively threaded to the clamping plates 14. The two ends of the screw 13 have opposite thread directions. The screw 13 has a strong self-locking force. A limit rod 15 is fixedly connected to the inner wall of the housing 3. The two clamping plates 14 are respectively slidably connected to the limit rod 15.

[0034] A rectangular plate 16 is fixedly connected to one end of the rotating plate 8 away from the cylindrical tube 5. Slide rods 17 are slidably connected to both ends of the rectangular plate 16. Triangular blocks 18 are connected to the lower end face of the slide rods 17. An adjusting spring 30 is fixedly connected between the triangular blocks 18 and the rectangular plate 16. An L-shaped rod 19 is fixedly connected to the side wall of one of the clamping plates 14. The L-shaped rod 19 is slidably connected to the triangular blocks 18.

[0035] A calibration plate 20 is fixedly connected to the end of the calibration rod 9 away from the calibration block 10. A return spring 29 is fixedly connected between the calibration plate 20 and the housing 3. An airbag 21 is fixedly connected between the calibration plate 20 and the housing 3. The airbag 21 is made of highly elastic rubber and other materials. The airbag 21 is relatively flat but has a large area. A small displacement distance can produce a large air volume. An air inlet pipe 22 is fixedly connected to the side wall of the airbag 21. An air outlet pipe 23 is fixedly connected between the airbag 21 and the calibration block 10. Both the air inlet pipe 22 and the air outlet pipe 23 are equipped with one-way valves. The flow direction of the one-way valve in the air inlet pipe 22 is from the outside to the airbag 21. The flow direction of the one-way valve in the air outlet pipe 23 is from the airbag 21 to the calibration block 10.

[0036] A crank handle 24 is fixedly connected to the side wall of the screw 13, and a hydraulic cylinder 25 is fixedly connected to the side wall of the housing 3. The output end of the hydraulic cylinder 25 is fixedly connected to the housing 3 located above. A guide rod 26 is fixedly connected to the end of the rotating plate 8 away from the cylindrical tube 5. The guide rod 26 is slidably connected to the housing 3.

[0037] In this invention, during use, the hydraulic cylinder 25 is first extended, causing one of the lower housings 3 to move downwards, bringing the two housings 3 closer together at a suitable distance. Then, a dumbbell-shaped rubber standard sheet to be tested is inserted between the two calibration blocks 10 of the lower housing 3, and slid in with slight force against the bottom surface of the housing 3, keeping the bottom of the standard sheet parallel to the bottom of the housing 3. The standard sheet compresses the two calibration blocks 10, causing the two calibration blocks 10 to cause the calibration rod 9 and calibration plate 20 to open to both sides, stretching the return spring 29 and airbag 21. The one-way valve in the air inlet pipe 22 opens, and the one-way valve in the air outlet pipe 23 closes, allowing outside air to enter the airbag 21 through the air inlet pipe 22. The standard sample is kept centered in the housing 3. The standard sample slides inward along the calibration block 10, contacting the micro-suction cup 7 and pressing it. The micro-suction cup 7 drives the connecting tube 6 and the sealing plate 12 to slide into the cylindrical cylinder 5. The sealing plate 12 allows gas inside the cylindrical cylinder 5 to flow out through the vent on the connecting tube 6 from the gap between the micro-suction cup 7 and the standard sample. The connecting tube 6 drives the rotating plate 8 and the rectangular plate 16 to move backward, causing the guide rod 26 to move backward into the groove of the fixed rod 2. The rectangular plate 16 drives the triangular block 18 to a position parallel to the L-shaped rod 19. The micro-suction cup 7 then holds the standard sample in place. When the guide rod 26 is observed to be in position, the inward pressing of the standard sample is stopped to avoid excessive force that could deform the sample. After release, the standard test piece automatically shifts due to gravity or vibration, causing its position to change. At this point, the bottom surface of the standard test piece is parallel to the bottom of the housing 3, and the left side is attached to the side wall of the fixing block 4. Shaking the handle 24 drives the screw 13 to rotate. With the limiting action of the limiting rod 15, and because the threads at both ends of the screw 13 are in opposite directions, the two clamping plates 14 move towards the center, firmly clamping the standard test piece. The self-locking of the screw 13 provides sufficient clamping force. One of the clamping plates 14 drives the L-shaped rod 19 to contact the triangular block 18 when it approaches, squeezing the triangular block 18. The triangular block 18 drives the sliding rod 17 to move downwards and compresses the adjusting spring 30. When the clamping plate 14 clamps the standard test piece, the L-shaped rod 19 passes over... The squeezing force on the triangular block 18 disappears, and the triangular block 18 and the slide bar 17 are reset under the action of the adjusting spring 30. The vertical direction of the L-shaped rod 19 is attached to the short right-angle side of the triangular block 18. Repeat the above operation to place the upper end of the standard test piece into the housing 3 located above and fix it. At this time, both the upper and lower ends of the standard test piece are parallel to the inner side wall of the housing 3, and the left side is vertically attached to the fixing block 4. The standard test piece is located in the center of the two correction blocks 10, and the longitudinal position is kept coincident. That is, the force direction of the standard piece is completely consistent with the direction of the tensile testing machine without any deviation. This avoids the error caused by the change in cross-sectional area of ​​the standard piece due to the tilting of the personnel, and ensures the accuracy of the test data.

[0038] The hydraulic cylinder 25 is activated, retracting to move the upper housing 3 upwards, breaking the standard test piece. Data from the standard test piece is recorded. Then, the crank handle 24 is turned, causing the screw 13 to move and separating the two clamping plates 14. During separation, one clamping plate 14 causes the L-shaped rod 19 to reset. The L-shaped rod 19 pulls the triangular block 18, which in turn causes the sliding rod 17 to rotate the rectangular plate 16 and the rotating plate 8. The rotating plate 8 then causes the connecting pipe 6 and the annular plate 11 to rotate, which in turn causes the sealing plate 12 to rotate, compressing the torsion spring 28. When the sealing plate 12 rotates, it no longer seals the square opening. External gas enters the cylindrical tube 5 through the directional opening. The micro suction cup 7 no longer has an adsorption force on the standard test piece. When the triangular block 18 flips to a certain angle, the L-shaped rod 19 passes over the triangular block 18. Under the elastic force of the torsion spring 28, the annular plate 11 and the sealing plate 12 reset, and the sealing plate 12 re-seals the square opening. At this time, the standard test piece can be easily removed without having to repeatedly contact the fixing of the standard test piece. The operation is very simple and quick, improving the efficiency of multiple tests.

[0039] After removal, the pressure of the standard test piece on the calibration block 10 disappears. Under the elastic force of the return spring 29, the calibration plate 20 and the calibration rod 9 are reset, squeezing the airbag 21. The one-way valve in the air inlet pipe 22 closes, and the one-way valve in the air outlet pipe 23 opens. The gas in the airbag 21 is discharged into the calibration block 10 through the air outlet pipe 23 and discharged from the multiple air outlets on the calibration block 10. This blows off the small amount of rubber debris and dust adhering to the shell 3, preventing them from remaining inside the shell 3 and causing unevenness inside the shell 3, which would affect the testing of the next standard test piece and ensure the accuracy of continuous testing.

[0040] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An auxiliary device for testing the tensile properties of a new butyl rubber material, comprising a C-shaped frame (1) and a fixing rod (2), characterized in that, The fixing rod (2) is fixedly connected to the inner wall of the C-shaped frame (1), and two housings (3) are slidably connected to the fixing rod (2). The lower housing (3) is fixedly connected to the C-shaped frame (1). The housing (3) is provided with an adjustment mechanism, which includes a fixing block (4), a cylindrical tube (5), a connecting tube (6), a micro suction cup (7), and a rotating plate (8). The fixing block (4) is fixedly connected to the inner side wall of the housing (3), the cylindrical tube (5) is fixedly connected to the side wall of the fixing block (4), the connecting tube (6) is slidably connected to the side wall of the cylindrical tube (5), the micro suction cup (7) is fixedly connected to one end of the connecting tube (6), and the rotating plate (8) is fixedly connected to the end of the connecting tube (6) away from the micro suction cup (7). The housing (3) is provided with a calibration mechanism, which includes a calibration rod (9) and a calibration block (10). The two calibration rods (9) are slidably connected to the side wall of the housing (3), and the two calibration blocks (10) are fixedly connected to the end of the calibration rod (9) near the fixed block (4).

2. The auxiliary device for tensile testing of butyl rubber new material according to claim 1, characterized in that, A circular ring plate (11) is fixedly connected to the outer surface of the connecting pipe (6). The circular ring plate (11) is slidably connected to the inner side wall of the cylindrical tube (5). A square opening is provided on the side wall of the cylindrical tube (5). A sealing plate (12) is fixedly connected to the side wall of the circular ring plate (11). The sealing plate (12) is slidably connected to the square opening.

3. The auxiliary device for tensile testing of butyl rubber new material according to claim 2, characterized in that, A screw (13) is fixedly connected to the inner wall of the housing (3). The two ends of the screw (13) are respectively threaded with clamps (14). A limit rod (15) is fixedly connected to the inner wall of the housing (3). The two clamps (14) are respectively slidably connected to the limit rod (15).

4. The auxiliary device for tensile testing of butyl rubber new material according to claim 3, characterized in that, A rectangular plate (16) is fixedly connected to one end of the rotating plate (8) away from the cylindrical tube (5), and sliding rods (17) are slidably connected to both ends of the rectangular plate (16).

5. The auxiliary device for tensile testing of butyl rubber new material according to claim 4, characterized in that, The lower end face of the slide bar (17) is connected to a plurality of triangular blocks (18), and an L-shaped rod (19) is fixedly connected to the side wall of one of the clamping plates (14), and the L-shaped rod (19) is slidably connected to the triangular blocks (18).

6. The auxiliary device for tensile testing of butyl rubber new material according to claim 5, characterized in that, A calibration plate (20) is fixedly connected to one end of the calibration rod (9) away from the calibration block (10). An airbag (21) is fixedly connected between the calibration plate (20) and the housing (3). An air inlet pipe (22) is fixedly connected to the side wall of the airbag (21). An air outlet pipe (23) is fixedly connected between the airbag (21) and the calibration block (10). A one-way valve is provided in both the air inlet pipe (22) and the air outlet pipe (23).

7. The auxiliary device for tensile testing of butyl rubber new material according to claim 3, characterized in that, A crank handle (24) is fixedly connected to the side wall of the screw (13), and a hydraulic cylinder (25) is fixedly connected to the side wall of the housing (3). The output end of the hydraulic cylinder (25) is fixedly connected to the housing (3) located above. A guide rod (26) is fixedly connected to the end of the rotating plate (8) away from the cylindrical tube (5). The guide rod (26) is slidably connected to the housing (3).

8. The auxiliary device for tensile testing of butyl rubber new material according to claim 6, characterized in that, A correction spring (27) is fixedly connected between the rotating plate (8) and the cylindrical tube (5), a torsion spring (28) is fixedly connected between the annular plate (11) and the cylindrical tube (5), a reset spring (29) is fixedly connected between the correction plate (20) and the housing (3), and an adjustment spring (30) is fixedly connected between the triangular block (18) and the rectangular plate (16).

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